Optometry and vision science : official publication of the American Academy of Optometry
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Randomized Controlled Trial Comparative Study Clinical Trial
Peripheral visual acuity with monovision and other contact lens corrections for presbyopia.
We have conducted two experiments to investigate the effect of monovision and other contact lens corrections for presbyopia upon peripheral visual acuity. In the first study, we measured binocular peripheral visual acuity using Landolt rings with seven subjects wearing a monovision correction. ⋯ In the second experiment we measured the peripheral visual acuity of 11 presbyopic subjects wearing distance contact lenses with lookover spectacles, soft progressive bifocal contact lenses, soft concentric bifocal contact lenses, monovision contact lenses, modified monovision contact lenses, and hard bifocal contact lenses using Koenig bar targets. There were no significant differences in peripheral visual acuity between any of the contact lens corrections for presbyopia.
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Comparative Study
What do color vision defectives say about everyday tasks?
A lengthy questionnaire was administered to 102 people with defective color vision and to an equal number of people with normal color vision. The questionnaire asked about the subjects' awareness of their defect and their knowledge of defective color vision as well as exploring the difficulties they experience with color at work and in pursuing leisure activities. ⋯ Substantial numbers reported that their color vision defect had affected their choice of career and many had been excluded from a chosen occupation. The screening of color vision in schools and provision of appropriate career counselling is urged.
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Optometry plays a key role in the provision of vision care services at the San Bernardino Juvenile Hall (SBJH), where 400 juvenile offenders, aged 12 to 18 years, are incarcerated. This program in San Bernardino, California, was established in 1979 by a practicing optometrist with support from federal, state, and local funding agencies. ⋯ An important component of the SBJH program is an ongoing clinical research program to study the relation between vision problems and juvenile delinquency, and the effect of vision training on the rehabilitation of delinquent youths. Preliminary data indicate a reduction in the recidivism rate for this population group.